Photoreduction of CO2 to methanol with hexanuclear molybdenum [Mo6Br14]2- cluster units under visible light irradiation

Pawan Kumar; Subodh Kumar; Stéphane Cordier; Serge Paofai; Rabah Boukherroub; Suman L. Jain

doi:10.1039/c3ra47255h

Photoreduction of CO₂ to methanol with hexanuclear molybdenum [Mo₆Br₁₄]^2- cluster units under visible light irradiation

Pawan Kumar, Subodh Kumar, Stéphane Cordier, Serge Paofai, Rabah Boukherroub, Suman L. Jain

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Abstract

Octahedral molybdenum clusters were found to be efficient visible light homogeneous photocatalysts for the reduction of carbon dioxide (CO₂) to methanol. Photoreduction was carried out by using 20 watt white cold LED flood light in dimethyl formamide/water or acetonitrile/water solutions containing triethylamine as a reductive quencher. Among the two cluster-based compounds, Cs₂[Mo₆Br₁₄] exhibited higher photocatalytic efficiency and afforded higher yield of methanol than (TBA) ₂[Mo₆Br₁₄] (TBA = tetrabutylammonium). After 24 h illumination, the yield of methanol was 6679.45 and 5550.53 μmol g ^-1 cat. using Cs₂[Mo₆Br₁₄] and (TBA)₂[Mo₆Br₁₄] cluster compounds as photocatalysts, respectively.

Original language	English
Pages (from-to)	10420-10423
Number of pages	4
Journal	RSC Advances
Volume	4
Issue number	20
DOIs	https://doi.org/10.1039/c3ra47255h
State	Published - 2014
Externally published	Yes

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T1 - Photoreduction of CO2 to methanol with hexanuclear molybdenum [Mo6Br14]2- cluster units under visible light irradiation

AU - Kumar, Pawan

AU - Kumar, Subodh

AU - Cordier, Stéphane

AU - Paofai, Serge

AU - Boukherroub, Rabah

AU - Jain, Suman L.

PY - 2014

Y1 - 2014

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AB - Octahedral molybdenum clusters were found to be efficient visible light homogeneous photocatalysts for the reduction of carbon dioxide (CO2) to methanol. Photoreduction was carried out by using 20 watt white cold LED flood light in dimethyl formamide/water or acetonitrile/water solutions containing triethylamine as a reductive quencher. Among the two cluster-based compounds, Cs2[Mo6Br14] exhibited higher photocatalytic efficiency and afforded higher yield of methanol than (TBA) 2[Mo6Br14] (TBA = tetrabutylammonium). After 24 h illumination, the yield of methanol was 6679.45 and 5550.53 μmol g -1 cat. using Cs2[Mo6Br14] and (TBA)2[Mo6Br14] cluster compounds as photocatalysts, respectively.

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Photoreduction of CO₂ to methanol with hexanuclear molybdenum [Mo₆Br₁₄]^2- cluster units under visible light irradiation

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